kim, injeong antzutkin, oleg n. shah, faiz ullah karlsson, olov jones, dennis sandberg, dick
The reaction of wood with maleic anhydride (MA) and sodium hypophosphite (SHP) has been identified as a viable modification method, with macroscopical properties indicating formation of cross-linking to explain the results. However, the chemical reaction between wood and the modification reagents has not been studied yet. To resolve this, the react...
klaas, peter emmerich, lukas militz, holger jones, dennis
The combination of different wood-modification technologies to obtain improved performance is increasingly receiving attention in research. In this study, Scots pine (Pinus sylvestris) sapwood was impregnated with furfuryl alcohol (FFA) in pure aqueous 20, 40, and 60% solution strength without adding any catalyst. In a second step, the FFA was poly...
kallakas, heikko akkurt, tolgay scharf, alexander mühls, fred rohumaa, anti kers, jaan
Increasing environmental awareness and the carbon-storing capability of wood have amplified its relevance as a building material. The demand for high-quality wood species necessitates exploring alternative, underutilized wood sources due to limited forest areas and premium wood volume. Consequently, the veneer-based industry is considering lower-va...
Ghavidel, Amir Hosseinpourpia, Reza
Published in
Holzforschung
Humins are heterogeneous and polydisperse furanic macromolecules derived from sugar biorefinery. Improving wood properties by humination has become of interest recently. This study examined the photodegradation stability of European pine sapwood microveneers modified with humins at different concentrations of citric acid (CA) and succinic acid (SA)...
Jones, Grace Ulan, Maria Liziniewicz, Mateusz Lindeberg, Johan Adamopoulos, Stergios
Birch has long suffered from a lack of active forest management, leading many researchers to use material without a detailed management history. Data collected from three birch (Betula pendula Roth, B. pubescens Ehrh.) sites in southern Sweden were analyzed using regression analysis to detect any trends or differences in wood properties that could ...
Borko, Domen Scharf, Alexander Lin, Chia-Feng Karlsson, Olov Humar, Miha Sandberg, Dick Jones, Dennis
To improve the resistance of wood to biological decay the Maillard reaction between introduced amines and wood cell-wall polymers can be utilised. However, initial studies in wood modification showed almost complete leaching of bicine and tricine from treated wood and the loss of beneficial effects. The objective of this study was to assess whether...
Buck, Dietrich
Innovations in materials science techniques are essential for advancing sustainable construction materials and achieving resource efficiency. Ideally, these novel approaches should replace traditional single-localised measurements with multidimensional, full-field data-fusion methods. A multi-sensor and data-driven approach can reveal hidden patter...
Hyll, Kari Joevenller, Sheng Svennerstam, Henrik Nysjö, Fredrik Broman, Olof Oja, Johan Sandberg, Dick
Karlsson, Olov Lin, Chia-Feng
Poor condition of roofs in terms of decay of shingles and loss of tar-based surface treatments has been revealed in a number of churches at various geographical locations in mid-Sweden. The condition of tars obtained from shingles of selected churches in mid-Sweden were analysed and obtained data were compared with geographical locations of the chu...
Fredriksson, Magnus
Recently developed technology in sawmills such as advanced log scanning and traceability concepts enable new ways of grading logs and boards. When it comes to strength grading, this is often done on sawn boards using automatic scanning systems. However, if board scanners were to be augmented with data from log scanners by using traceability, more i...
